<template>
    <!-- 登录表单的容器 -->
    <div class="login_container">
        <!-- 登录区域 -->
        <div class="login_box">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/img/logo.png">
            </div>
            <!-- 表单 -->
            <el-form :model="loginForm" :rules="loginRules" ref="loginForm" class="login-form">
                <h2>勤工俭学管理系统</h2>
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input type="password" v-model="loginForm.password" prefix-icon="el-icon-lock"></el-input>
                </el-form-item>
                
                <el-form-item class="login-btn">
                    <el-button type="primary" @click="submitForm('loginForm')">立即登录</el-button>
                    <el-button @click="resetForm('loginForm')">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
import { login } from "../api/authentication"

export default {
    name: 'Login',
    data() {
      return {
        loginForm: {
          username: '',
          password: ''
        },
        loginRules: {
          username: [
            { required: true, message: '请输入用户名称', trigger: 'blur' },
            { min: 3, max: 16, message: '长度在 3 到 16 个字符', trigger: 'blur' }
          ],
          password: [
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min: 3, max: 16, message: '长度在 3 到 16 个字符', trigger: 'blur' }
          ]
        }
      };
    },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            login({
              username: this.loginForm.username,
              password: this.loginForm.password
            })
            .then((res) => {
              const data = res.data
              if (data.success === true) {
                this.$router.push('/Index')
              } else {
                console.log(data);
                alert(data.message)
              }
            })
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      resetForm(formName) {
        this.$refs[formName].resetFields();
      }
    }
}
</script>

<style lang="less" scoped>
    .login_container{
        height: 100%;
        background-color: #B3C0D1;
    }

    .login_box{
        width: 450px;
        height: 380px;
        background-color: #ffffff;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%,-50%);

        .avatar_box{
            width: 130px;
            height: 130px;
            border: 1px solid #eeeeee;
            border-radius: 50%;
            padding: 10px;
            box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
            margin: -65px auto;
            background-color: #FFFFFF;

            img{
                width: 100%;
                height: 100%;
                border-radius: 50%;
            }
        }

        .login-form{
            position: absolute;
            bottom: 0;
            width: 100%;
            padding: 0px 20px;
            box-sizing: border-box;
            text-align: center;
        }

        .login-btn{
            display: flex;
            justify-content: flex-end;
        }
    }
</style>